Hardware Spec Index

Caldera PW-4027 Ultra 650W 80 PLUS Gold ATX Power Supply

Power Supplies · Caldera · SKU PW4027-ULTRA · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index901 (Power Supplies scale)
Category rank#41,693
Street price$39
Power650 W (rated)
Performance per dollar23.10
Released2021

Specifications

BrandCaldera
ModelCaldera PW-4027 Ultra
Rated output650 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityFully modular
Fan135 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty7 years

Related guides

80 PLUS Efficiency Ratings ExplainedATX 3.1 Power Supplies and the 12V-2x6 Connector

Similar Power Supplies

ModelBenchmarkPriceCompare
Novexa PW-3382 Ti 1300W 80 PLUS Platinum ATX 3.1 Power Supply2,506$229Compare
Caldera PW-3188 Max 1000W 80 PLUS Titanium SFX Power Supply2,310$209Compare
Zephyra PW-3328 SE 750W 80 PLUS Gold ATX 3.0 Power Supply947$39Compare
Caldera PW-8352 Max 1600W 80 PLUS Platinum ATX Power Supply2,668$309Compare
Vantrel PW-1354 Ultra 850W 80 PLUS Gold ATX 3.1 Power Supply1,441$99Compare
Teralux PW-8309 Ultra 1300W 80 PLUS Titanium ATX 3.0 Power Supply2,819$369Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-4027 Ultra 650W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/2247685 (accessed 2026-10-19).